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Article Dans Une Revue Physical Review Letters Année : 2018

Salt-induced Long-to-Short Range Orientational Transition in Water

Julien Duboisset
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Résumé

We report the long-range orientational organization of water using polarization-resolved second harmonic scattering operated in a right-angle configuration. A transition is observed between the neat water orientational organization involving an azimuthal molecular orientation distribution towards a radial molecular orientation distribution when salt is added. These two orientational phases are quantitatively described using a molecular model of the second harmonic scattering response. It is observed that the long-range correlation present in the neat water phase abruptly disappears and is replaced by a shorter range correlation centered around the ions as the salt concentration is increased.
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Dates et versions

hal-01897790 , version 1 (17-10-2018)

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Julien Duboisset, Pierre-Francois Brevet. Salt-induced Long-to-Short Range Orientational Transition in Water. Physical Review Letters, 2018, 120 (26), pp.263001. ⟨10.1103/physrevlett.120.263001⟩. ⟨hal-01897790⟩
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